irq.c

Go to the documentation of this file.

/*
 * arch/arm/mach-mv78xx0/irq.c
 *
 * MV78xx0 IRQ handling.
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <mach/bridge-regs.h>
#include <plat/orion-gpio.h>
#include <plat/irq.h>
#include "common.h"

static int __initdata gpio0_irqs[4] = {
    IRQ_MV78XX0_GPIO_0_7,
    IRQ_MV78XX0_GPIO_8_15,
    IRQ_MV78XX0_GPIO_16_23,
    IRQ_MV78XX0_GPIO_24_31,
};

void __init mv78xx0_init_irq(void)
{
    orion_irq_init(0, IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF);
    orion_irq_init(32, IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF);
    orion_irq_init(64, IRQ_VIRT_BASE + IRQ_MASK_ERR_OFF);

    /*
     * Initialize gpiolib for GPIOs 0-31.  (The GPIO interrupt mask
     * registers for core #1 are at an offset of 0x18 from those of
     * core #0.)
     */
    orion_gpio_init(NULL, 0, 32, GPIO_VIRT_BASE,
            mv78xx0_core_index() ? 0x18 : 0,
            IRQ_MV78XX0_GPIO_START, gpio0_irqs);
}